Anti-conidial Germination Factors Induced in the Presence of Probenazole in Infected Host Leaves. I. Isolation and Properties of Four Active Substances
- 1 June 1981
- journal article
- research article
- Published by Oxford University Press (OUP) in Agricultural and Biological Chemistry
- Vol. 45 (6) , 1431-1435
- https://doi.org/10.1080/00021369.1981.10864717
Abstract
The highest inhibition rate of conidial germination of Pyricularia oryzae was shown by extracts of rice plant leaves inoculated by a pathogen after treatment with probenazole, a rice blast controlling agent. Four anti-conidial germination substances were isolated from these extracts. Substances A, C and D inhibited the germination of the conidia at concentrations between 100 and 200 mcg/ml, and substance B caused morphological changes in the germination tubes of the conidia with a little inhibition of germination. These substances were differentiated from momilactone A, B and the degraded or metabolized products of probenazole. Besides anti-conidial germination activity, they showed antimicrobial activities against several kinds of phytopathogenic bacteria of fungi on agar plates by diffusion method.This publication has 1 reference indexed in Scilit:
- Chemical transformations of the diterpene lactones momilactones A and BJournal of the Chemical Society, Perkin Transactions 1, 1977